json bugfix
starting to add splicelexer
transferring to other machine...
working on ICE in traits
Changed TTFrame to structural record, allowing removal of aux structure
checkpoint, testing for damage
going home now...
checkpointing
test cases, backing out of several changes
test case fixes
deriving-eq all over ast
use node_id for indexing in ast_to_ty_cache
finish deriving_eq in ast
tidy